<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>JS练习</title>
</head>
<body>
    <script>
        //数据类型
        // let name = "zhangsan";  //string
        // // let age = 15;
        // // name = 15;
        
        // name = 15;  //number
        // name = true;  //boolean
        // console.log(typeof name);

        // let aa;
        // console.log(aa);

        //运算符
        // let num = 15/2;
        // console.log(num);
        
        let num1 = 10;
        let num2 = "10";

        console.log(num1==num2);  //true
        console.log(num1===num2);   //false
        
        
        
    </script>
    <!-- <script src="js.js"></script> -->
</body>
</html>